Methanol/water injection

[whitels1ss]

Really hoping this fixes the problem, otherwise I am stumped. Have the old one out and pulled apart as much as it will allow and it looks fine. I am hoping it has failed inside the part that I cannot open, and it did have some oil like substance on the bottom of it when I pulled it out.

I assume running the new one dry for a few seconds to see if it works is not a good idea? ie The coolant keep the pump cool?

I assume you have been using the correct quality coolant with it,
Harrop recommend a 50/50 mix of the red coloured GM coolant with demineralised water
& importantly to change the coolant at least every 12 months.

Has your intercooler radiator got a bleeder on the top that you can get at?

[BLACK 346]

I assume you have been using the correct quality coolant with it,
Harrop recommend a 50/50 mix of the red coloured GM coolant with demineralised water
& importantly to change the coolant at least every 12 months.

Has your intercooler radiator got a bleeder on the top that you can get at?

Yeah, 50/50 dexcool, will try and find bleed valve. Cheers

[whitels1ss]

Yeah, 50/50 dexcool, will try and find bleed valve. Cheers

On mine, I just have to remove the infill panel from over the top of the radiator/radiator support panel
& there is a little bleeder nipple (same as brake caliper) on the top of the intercooler radiator.

[BLACK 346]

On mine, I just have to remove the infill panel from over the top of the radiator/radiator support panel
& there is a little bleeder nipple (same as brake caliper) on the top of the intercooler radiator.

Found it thanks Ed, but unfortunately after all my efforts I am back to square one

Did not make any difference. Pump does not appear to run, and no flow through resorvoir. Bloody infuriating.

[BLACK 346]

Pulled the hoses off the front of the blower and no coolant at all. Something more sinister maybe? The pump does not even try to run though, you would think a brand new pump would at least try and run or make some sort of noise.

[BLACK 346]

It is a Christmas miracle lol. After much rooting around I ended up filling the top blower hose by hand so that the coolant ran down to the pump. With the bleed nipple open it seemed to be taking a lot more than was coming out of the nipple. After about half a litre like magic coolant start flowing out of the blower outlet. Whilst I cannot hear the pump nor feel it running it is definitely warm to touch. Went for a 30 minute drive around the suburbs and the highest IAT I saw was 16 above ambient when I was on boost, then it would quickly drop back and sit rock solid on 14 above ambient until I gave it some stick. Even sitting at the lights for about 90 seconds it did not budge off 39 degrees IAT. Very happy, thanks for all that assisted, much appreciated.

Edit: Nearly forgot to mention, I feel like I am driving a blown V8 again as well, what a different it has made to power.

[whitels1ss]

Great stuff Rod!

[Micks]

Enjoy Rod!

[BLACK 346]

Well my joy was short lived. Went for a drive to lobethal today via chain of ponds, intake temps 40 over ambient again
Is it possible that air remains in the system and is causing issues? Two drives yesterday and never saw more than 18 over ambient.

[whitels1ss]

Could it be an intermittent wiring fault perhaps?

Have you removed the intercooler coolant cap while the car is running to see if there is flow?

[whitels1ss]

Have you checked the earth side of the pump wiring?

(I know you said previously you checked & it had power.)

[Micks]

Perhaps it's been wired off the ignition side only & drawing too much current, should really have a power relay triggered off the ignition when the engine runs.

[whitels1ss]

Perhaps it's been wired off the ignition side only & drawing too much current, should really have a power relay triggered off the ignition when the engine runs.

I would think Brad that would have wired it through the correct relay but that could have faulted.

[BLACK 346]

Yes, power to one terminal of the plug and is running through a relay. It has power as soon as ignition is on, no need for engine running. No visible glow througj resorvoir, but there wasnt yesterday either when temps were right down. Might replace relay, cheap way to rule that out. Even coasting down hills through Heyson tunnels they stayed at 61 degrees, outside was 25.

[BLACK 346]

Have you checked the earth side of the pump wiring?

(I know you said previously you checked & it had power.)

Will check earth side, never thought about that. Also will replace relay. It is wired to one of the coil packs I believe.